else:
raise NotImplementedError("Board not supported {}".format(board_id))
-if SCL and SDA:
+try:
def I2C():
"""The singleton I2C interface"""
return busio.I2C(SCL, SDA)
-if SCLK and MOSI and MISO:
+except NameError:
+ pass
+
+try:
def SPI():
"""The singleton SPI interface"""
import busio
return busio.SPI(SCLK, MOSI, MISO)
+
+
+except NameError:
+ pass